button实现选中页面div层的内容
我要实现的功能是:点击页面button按钮后,实现对某div层里面内容(包括div内的文字和图片,选中这些内容,类似ctrl+a的效果),这个效果目前已经实现了,下面给出了我的代码,但是用笔记本(宽屏)访问的时候是可以达到效果的,用台式机(方屏)却没有这个效果。麻烦哪位高手帮忙看看能否改进一下,不用考虑浏览器的兼容性,适合任一浏览器即可(我常用的是360安全浏览器5.0版本,ie内核的)。
==button按钮=================
<input id="bt_a" type="button" value="选中产品内容" onclick= "rdl_createRange1()"/>
===产品内容所在层代码================
<div id="com_a"><div id="com_b" class="boxCenterList RelaArticle"></div> <div id="com_c"> <blockquote> {$goods.goods_desc} //产品内容包含文字和图片 </blockquote> </div></div>
===实现选中div层内容功能的js================
<script> function rdl_createRange1(){ //这个地方只能选取id为com_b的层,ecshop商城的产品页面var oMessage=document.all("com_b"); var oTextRange=document.body.createTextRange(); with (oTextRange) { moveToElementText(oMessage); execCommand("SelectAll"); } var oTextRange=document.selection.createRange(); } </script>
回复讨论(解决方案)
把
var oMessage=document.all(" com_b");
改成
var oMessage=document.all(" com_c");
关键问题怎么用代码来获取判断是宽屏还是方屏????
把
var oMessage=document.all("com_b");
改成
var oMessage=document.all("com_c");
我不知道是什么原因,使用com_c 是不行的,没有数据的。而且我用谷歌浏览器审查元素的时候,也发现实际的页面还是在com_b里,估计是我少加一个结尾/div了。
现在的问题是宽屏可以,方屏不行。头疼

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